[Feature Request] Argo repo diff scanning

[taylorsmithgg]

In our current environment, we use a centralized argo repository to maintain all our kubernetes manifests.
If we were to scan all the corresponding directories, it would produce too much information for us to reliably digest.

My proposal is to extend the current solution to support scans of the git diff information for new or modified manifests and calculate the new cost of added or modified manifests for the entire repository vs the current directories input.